\documentclass{standalone}

\usepackage{tikz}
\usepackage{shapes}

\begin{document}
\begin{tikzpicture}
  \cross{teal}{(4,4)}
  \cross{teal}{(3,6)}
  \cross{teal}{(7,3)}
  \cross{teal}{(9,4)}
  \cross{teal}{(10,7)}
  \cross{teal}{(4,9)}

  \cross{teal}{(6,6)}
  \cross{teal}{(7,8)}

  \square{black}{(6,4)}
  \square{black}{(5,5)}
  \square{black}{(5,7)}
  \square{black}{(4,7)}
  \square{black}{(5,8)}
  \square{black}{(7,5)}
  \square{black}{(8,5)}
  \square{black}{(8,6)}
  \square{black}{(9,6)}
  \square{black}{(8,7)}

\end{tikzpicture}
\end{document}